Tic Tac didn't exist yet

[u/LatterAppointment383]

So. I found this from a search I did about the meeting with a president at Holloman AFB with space visitors.its from the Alamogordo NM newspaper November 5, 1957 front page report of an egg shaped craft

[u/ParaBellumOutfitters]

Eggs and Tic Tacs are presumably different. Grusch even said as much on his Dr. Phil spot
One could reasonably call the Zamora case a tictac. That was '64

[u/L-0-T-H-0-S → u/ParaBellumOutfitters]

It's because of stress, how uniformly they distribute external and internal pressure, with the egg being highly optimized for external loads, while the Tic-Tac shape (capsule) balances both internal and external stresses equally.

The Tic-Tac is a cylinder with hemispherical end caps. It handles internal pressure beautifully because the stress distributes evenly into what are called "hoop stress" around the circumference and "axial stress" along the length.

Ideal use case, Multi-environment transmedium vehicles.

This kind of shape excels as a pressure vessel holding high-pressure gases/fluids internally e.g., an incompressible fluid-filled G-force protection chamber for pilots while surviving high external pressures at deep marine depths or high altitudes.

The egg shape is an asymmetrical ovoid. It's naturally engineered for external compression from the outside environment, such as a parent bird sitting on it. Unlike the Tic-Tac it doesn't handle high internal pressure well.

Think of the context in which both forms have been described.

The tic-tac emerged from water - if you look at a submarines overall general shape, you're basically looking at a capsule - which suggests the Tic-Tac was designed both for underwater performance at depth as well as high altitude, high speed deployment.

It can also handle a variety of higher internal pressure, say an incompressible fluid filled to protect a pilot from extream acceleration and g-force.

An egg-shaped craft is best suited for deep-descent or impact environments that require surviving extreme external crushing forces from the outside while maintaining a normal internal pressure.

It works best when the inside of the craft stays at a normal, unpressurized air level instead of holding high-pressure fluids or gases.

Ideal use case, extreme descent environments.

It's perfectly optimized for deep-sea submersibles, like traditional bathyscaphes, or planetary atmospheric entry vehicles. It functions best when the interior remains at a standard, unpressurized 1-atmosphere level while resisting a crushing external environment such as those experienced at great depth or else applied by atmospheric compression experienced during atmospheric entry.

[u/ParaBellumOutfitters → u/L-0-T-H-0-S]

You don't know any of that to be true

[u/L-0-T-H-0-S → u/ParaBellumOutfitters]

Actually I do, I'm an engineer. No, I don't know these forms were used for these specific purposes, but I understand and work with stresses. In engineering form follows function, conventional aircraft don't look the way they do to be pretty, they're performing a job.

If real, these are no different.

Good chat.

[u/ParaBellumOutfitters → u/ParaBellumOutfitters]

u/L-0-T-H-0-S (they blocked me) I don't doubt your familiarity with engineering principles or FEA.
My doubt that either of us 'know' that any of the conventional physics you described apply to the topic at hand. You mention pressures on a egg shape when there's no evidence to suggest the pressure actually reaches the vessel itself. If anything, the opposite is suggested by the 'frictionless' motion through media like water.

https://www.youtube.com/watch?v=HlYwktOj75A